US1492583A - Submarine periscope - Google Patents

Description

May 6 1924.

y A. STEINLE SUBMARINE PERIscoPE Filed June 19. 1923 Patented May 6, /1 924.

UNITED STATE-s PATENT OFFICE.-

"AnoLF'sTEINLE, or JENA, GERMANY, ASSIGNOR To THE FIRM or CARL zEIss, or

' JENA,4 erauvrANY.v c i i sUBMARINErERIsooPE;

l Application inea June' i9, 1923. serialv Np; 645,361.5

To all whom t may concem:

Be it known that I, ADoLr Srnrn'w, a citizen of Germany, and residing at- Jena, Germany, have invented a new-and useful SubmarinePeriscope (for which I have filed an 'application in Germany July 29, 1922:), of which the following is a specification.

The present invention relates to a submarine peris'cope whose ocular is fitted to a casingy rotatably supported on' the boats hull in which casing a tube containing the entrance reflector of the periscope is so disposed as to participate in rota-tions of the casing and as to be displaceably disposed relatively to the casing in the direction of its axis coinciding with the axis of rotation of the casing.

For periscopes of this kind it has been suggested to construct a gearing in such a way that the displacements of' the tube may be effected by a motor rigidly set up in the boats hull without the motion of disp-lacement and of rotation of the periscope affecting each other. According to the invention there is obtained a gearing which is considerably more simplified than those hitherto suggested if the demand that the motion of displacement and of rotation are independent of one another be restricted to such an extent as to warrant the independence at least approximately. This restricted demand is fulfilled if the gearing which serves for displacing the tube contains a worm wheelsupported on the casing and engaging in a worm, whose axis coincides with the axis of rotation of the casing. The Worm may either be sup-ported on the boats hull or on the casing or both on the boats hull and the casing. If provision be made that in the gearing which serves for actuating the worm wheel, inclusive of the motor serving for the actuation, the friction is slighter than inthe worm gearing, t-he worm participates in any displacements of the casing. The independence of the motions'is then entirely warranted.

The annexed drawing shows a constructional example of the invention. Fig.` l is a longitudinal section on line l-l of Fig. 2, Fig.- 2 is another longitudinal section on the line 2 2 of Fig. 1, Fig. 3 is a cross section on the line 3 3 of Fig. l.

On a base al assumed to be rigidly connected to the boats hull a a casing b is supported rotatably about an axis X-X. For

ings f which are fitted different.

simplicityssake the actuation for the rota,- tion is not shown in the drawing. y.lVithin the casing in the direction ,of theV axis a tube c which conta-ins the yentrance reflector (not visible in the drawing) of the periscopeand which is provided'at its lower end with 'a reflecting plrisin c1 which transmits the luminous rays emerging from the tube c in the downward direction to an ocular b1 disposed at the upper part of the casing b. A worm (l is supported on the base al and on a. cross head b2, screwed to the casing 1n such a way that its axis coincides with the axis of rotation X-X. A bevel wheel (l1 supported on the worm-shaft d engages in a bevel wheel e1 supported on the base al, the shaftl eoof the bevel wheel c1 being assumed to be coupled to a motor. In the worm d engagetwo worin wheel geareach to the nave f1 of a rope pulley f2. The two rope pulleys are rotatably supported on the casing b in such a way that their axes Y-Il and Y2-Y2 are parallel to each other and lie on sides of the axis X-X- Over each of both rope pulleys f2 runs an endless rope f3 which rests upon a pulley f* sup-ported on the top of the casing b. The tube c is suspended at the two ropes f3 by means of a4 cross bar c2.

The periscope is drawn in and out by actuating the worm al from the shaft e0. If the friction in the worm gearing be greater than in the gearing actuating the worm, of which gearing only the bevel wheels d1 and el are shown in the drawing, in the event of a rotation of the casing b about the .axis

-X the worin wheel gearings f drive the worm which entails a slight rotation of the gearing c ll, e1 inclusive of the motor shaft but does not affect the lifting motion of the tube c. It the conditions of friction be inverse, i. e. if with a rota-tion of the casing b the worm remains unaffected, the worm wheel gearings f experience owing to their meshing with the worm al a slight rotation about their axes Yl-Yl and Y2-Y2 respectively` which rotation is` however, so insignificant that both rotation and displaceinentmay practically be considered independent of each other.

I claim: i

1. In a submarine periscope a casing, means for rotatably supporting this casing ZJ' there .is supported displaceably the casing and a worm on a boats hull, an ocular fitted to this casing, a tube adapted to contain at its upper end an entrance reflector and having its axis coincidingy with the axis of rotation of the casing, the tube being displaceably disposed relatively to the casing in the direction of these axes, means for coupling the casing and the tube for joint rotation, and a gearing adapted to displace. the said tube in the said directionand containing at least one worin Wheel rotatably disposed on engaging in this worm WheeL the axis of which coincides with the axis of the casing.

2. In a submarine periscope a casing, means for rotatably supporting this casing on a boats hull, an ocular fitted to this casthe casing ing,"a. tube adapted to contain at its upper end an entrance relector and having its axis coinciding with the axis of rotation of the. casing, the tube being displaceably disposed relatively to the casing in the direction of these axes, means for coupling the casing and the tube for joint rotation, and a gearing adapted to displace the said tube in the saidl direction and containing at least one Worm Wheel rotatably disposed on and a Worm engaging in this Worm Wheel, the axis of which coincides with the axisof the casing, the friction in the worm Wheel and the Worm being greater than that of the other parts, of the gearing.

ADoLF sTEiNLE.

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